Journal
CONSTRUCTION AND BUILDING MATERIALS
Volume 53, Issue -, Pages 360-369Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.conbuildmat.2013.11.098
Keywords
Carbonation; Chlorides; Corrosion inhibitors; Design service life; Durability; Performance-based method; Probabilistic calculus; Reinforced concrete corrosion
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The implementation of new data regarding the performance of corrosion inhibitors is applied through a performance-based method approved by recent European standards for the probabilistic calculus of service life of reinforced concrete structures. A set of concrete compositions was mixed in order to experimentally obtain strength - compressive - and durability properties - carbonation and chloride diffusion and together with the available results concerning the performance of two types of corrosion inhibitors three scenarios were defined for each concrete composition: (i) plain concrete; (ii) concrete with added admixture inhibitor and (iii) concrete with surface applied migration inhibitor. The probabilistic calculus of service life for each scenario was carried out using modeling equations in which the concrete properties were changed in view of the inhibitors' performance characteristics. The results show that there is a significant improvement in the design service life when this is modeled considering the effect of corrosion inhibitors. (C) 2013 Elsevier Ltd. All rights reserved.
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